The basic differences between port jobs is when the power comes on. A woods port is a low to mid powerband, a dune port is more a mid to top port and a drag port is all up top. Give Jeff @ FAST a call and He'll hook you up.

The exhaust port timing is usually ran lower on a woods port than a dune port. You usually widen the exhaust on a woods port, and sometimes even lower it by not running a base gasket and just using sealer on the cylinder. Also messing with the transfers, moving them up and making them slightly larger helps with the midrange.

The exhaust port timing is usually ran lower on a woods port than a dune port. You usually widen the exhaust on a woods port, and sometimes even lower it by not running a base gasket and just using sealer on the cylinder. Also messing with the transfers, moving them up and making them slightly larger helps with the midrange.

This may be a dumb question, but I was wondering what you meant by " moving the transfers up"?

basically, woods porting puts the power starting right from the lowend, as stated, but what's more, the power and feel is allot more road and useable at differnt load ranges, for getting real technical. dune, on the other hand, is more of a flat out hard pull mid-top, but still retains some good, useable mid-low. a couple missed between the 2 are mx and trail. mx is focused on the midrange as a priority with low and high still working in there. trail is right there about the same as dune, but with more midrange and broader power. there area allot of different named port styles, and it's not really as cut-and dry as to exactly how they perform, especially when comparing one builder to the other. one mans dune will be close to trail, and anothers' closer to drag.